To suppress frost formation in an outdoor heat exchanger without lowering heating performance.SOLUTION: An air conditioner 1 includes a frost formation determination section which determines that frost formation can be generated in an outdoor heat exchanger 23 based on a lapse time in a state where a difference between a detection temperature of an outdoor temperature sensor 15 and a detection temperature of an outdoor heat exchanger outlet temperature sensor 12 is equal to or higher than a frost formation temperature difference that frost formation can be generated in the outdoor heat exchanger 23, and an operation control section which controls a compressor 21 and a blower 52 so that air guided into a cabin becomes a target blowout temperature to be set based on required heating performance and executes normal heating operation, where the operation control section executes frost formation suppression operation that lowers the target blowout temperature compared to the normal heating operation and increases a blowing amount by the blower 52, when the frost formation determination section determines that the frost formation can be generated.SELECTED DRAWING: Figure 4
【課題】暖房性能を低下させることなく室外熱交換器への着霜を抑制する。【解決手段】空調装置1は、外気温センサ15の検出温度と室外熱交換器出口温センサ12の検出温度との差が室外熱交換器23に着霜の発生し得る着霜温度差以上になっている状態の経過時間に基づいて、室外熱交換器23に着霜が発生し得る状態になったことを判定する着霜判定部と、車室内に導かれる空気が要求された暖房性能に基づいて設定される目標吹出温度になるようにコンプレッサ21とブロワ52とを制御して通常暖房運転を実行する運転制御部と、を備え、運転制御部は、着霜判定部が着霜が発生し得る状態になったと判定した場合に、通常暖房運転と比較して目標吹出温度を低下させてブロワ52による送風量を増大させる着霜抑制運転を実行する。【選択図】図4
AIR CONDITIONER
空調装置
2019-02-14
Patent
Elektronische Ressource
Japanisch
IPC: | B60H ARRANGEMENTS OR ADAPTATIONS OF HEATING, COOLING, VENTILATING, OR OTHER AIR-TREATING DEVICES SPECIALLY FOR PASSENGER OR GOODS SPACES OF VEHICLES , Anordnung oder Einbau der Heizung, Kühlung, Lüftung oder anderer Luftbehandlungsvorrichtungen für die Fahrzeugräume für Reisende oder Fracht |